gill slit


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gill slit

 (gĭl)
n.
1. One of several narrow external openings connecting with the pharynx, characteristic of sharks and related fishes, through which water passes to the exterior, thereby bathing the gills. Also called branchial cleft, gill cleft.
2. Embryology One of several rudimentary invaginations in the surface of the embryo, present during development of all air-breathing vertebrates and corresponding to the functional gill slits of aquatic species. Also called branchial cleft, branchial groove, pharyngeal cleft, pharyngeal groove.

gill slit

n
(Zoology) any of a series of paired linear openings to the exterior from the sides of the pharynx in fishes and some amphibians. They contain the gills
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gill slit - one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
References in periodicals archive ?
The gills have frilly edges, and the first gill slit runs continuously across the shark's throat, making it unique among sharks to have this physical characteristic.
A long-finned eel, with the dorsal fin originating well ahead of the anal (anodorsal distance = 9-17% of total length) but closer to the anus than to the gill slit.
A single gill slit was present on each side of the body.
Gill openings relatively small, slightly oblique, in horizontal series, all about equal in height; height of first gill slit 1.
The gill slit skeletal bars are commonly opaque, but in 1 of every 10 animals, they are pigmented black.
4%, last two closer together than slits 1-3, with fourth gill slit anterior to pectoral fin base and fifth gill slit mostly over pectoral fin base; first four slits subequal in length, fifth much smaller; snout slightly rounded; eyes dorsolateral, slit-like, length 3.
Gill openings elongate S-shaped, forming weakly fringed lobe laterally; length of first gill slit 1.
In one observation, a rudimentary blood vessel could be demonstrated by electron microscopy in the expanded ecm space below the notochord of a larva with one primary gill slit [ILLUSTRATION FOR FIGURE 1B OMITTED].
Recognisable by the six pairs of long gill slits on each side of their head, this shark can grow up to 16ft.
The Pirana is a truly freaky mini-Jaws-looking lure with gaping mouth, teeth and gill slits where water and bubbles can exit.